Expansion joints are components designed to absorb axial, lateral, and angular displacements in piping systems caused by temperature fluctuations. They are widely used in diverse industrial facilities, including petrochemical complexes, power plants, steel mills, and chemical plants.
SINGLE UNRESTRAINED :This expansion joint is the simplest available, comprising one bellows section and end connections. It requires the strictest control of adjacent piping regarding anchors and guiding.
UNIVERSAL EXPANSION JOINT :This joint features two bellows sections connected by a center pipe. Its design allows large lateral deflection, plus axial and angular movements. It lacks hardware to resist pressure thrust and, like the single unrestrained type, requires proper anchoring and support.
SINGLE TIED EXPANSION JOINT :Similar to the single unrestrained type but fitted with tie rods, this joint prevents bellows overextension. The tie rods act as limit rods with stops set to allow axial movement within a specifically designed range.
TIED UNIVERSAL EXPANSION JOINT :Similar to the universal type but integrated with tie rods, this joint restrains pressure thrust. It cannot accept external axial movement unless the pressure thrust force is overcome.
GIMBAL EXPANSION JOINT :A single bellows section design, it allows angular rotation in any plane via two hinge pairs connected to a common central floating ring. Typically used in pairs or combined with hinged expansion joints.
HINGED EXPANSION JOINT: Featuring a single bellows section, it permits angular rotation in one plane only. Its hinge hardware is axially rigid, preventing axial movement in piping systems. Usually used in pairs or with gimbal expansion joints.
IN-LINE PRESSURE BALANCED EXPANSION JOINT:Uniquely designed to absorb lateral, axial, and angular movement. It suits scenarios where piping anchoring is unfeasible or pressure loads exceed equipment limits (e.g., pumps, turbines).
PRESSURE BALANCED ELBOW EXPANSION JOINT: It restrains and balances pressure thrust, eliminating the need to anchor adjacent piping or equipment. Can be designed as single or universal based on required lateral movement.
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